#include <math.h>
#include <string.h>
#include "sx126x.h"
#include "sx126x-board.h"
#include "delay.h"
#include "Lora.h"
#include "user.h"
#include "sx126x-board.h"
#include "string.h"
#include "stdio.h"
#include "delay.h"
#include "main.h"
static RadioEvents_t RadioEvents;
#define USE_MODEM_LORA
//#define USE_MODEM_FSK
#define REGION_CN779
uint32_t RxDutyCycle_RX_time   =128;
uint32_t RxDutyCycle_SLEEP_time=256;
#if defined( REGION_AS923 )

#define RF_FREQUENCY                                923000000 // Hz

#elif defined( REGION_AU915 )

#define RF_FREQUENCY                                915000000 // Hz

#elif defined( REGION_CN779 )

#define RF_FREQUENCY                              433000000 // Hz
#define RF_FREQUENCY_R                              500000000 // Hz
#define RF_FREQUENCY_T                              470200000 // Hz


#elif defined( REGION_EU868 )

#define RF_FREQUENCY                                868000000 // Hz

#elif defined( REGION_KR920 )

#define RF_FREQUENCY                                920000000 // Hz

#elif defined( REGION_IN865 )

#define RF_FREQUENCY                                865000000 // Hz

#elif defined( REGION_US915 )

#define RF_FREQUENCY                                915000000 // Hz

#elif defined( REGION_US915_HYBRID )

#define RF_FREQUENCY                                915000000 // Hz

#else

    #error "Please define a frequency band in the compiler 'options."

#endif

#define TX_OUTPUT_POWER                             22        // 22 dBm

extern bool IrqFired;
extern uint8_t lora_yingda_flag;
uint16_t lora_yingda_num;


//bool EnableMaster=true;//Ö÷Ñ¡Ôñ
bool EnableMaster=false;//´ÓÑ¡Ôñ

uint16_t  crc_value;
/*!
 * Radio events function pointer
 */

static RadioEvents_t RadioEvents;

#if defined( USE_MODEM_LORA )

#define LORA_BANDWIDTH                              2         // [0: 125 kHz,    
                                                              //  1: 250 kHz,
                                                              //  2: 500 kHz,
                                                              //  3: Reserved]
#define LORA_SPREADING_FACTOR                       5         // [SF7..SF12]    
#define LORA_CODINGRATE                             1         // [1: 4/5,       
                                                              //  2: 4/6,
                                                              //  3: 4/7,
                                                              //  4: 4/8]
#define LORA_PREAMBLE_LENGTH_T                      10         // Same for Tx 
#define LORA_PREAMBLE_LENGTH_R                      64        // Same for Rx
//#define LORA_PREAMBLE_LENGTH                      990         // Same for Tx and Rx
#define LORA_SYMBOL_TIMEOUT                         0         // Symbols
#define LORA_FIX_LENGTH_PAYLOAD_ON                  false
#define LORA_IQ_INVERSION_ON_T                      false
#define LORA_IQ_INVERSION_ON_R                      false


#elif defined( USE_MODEM_FSK )

#define FSK_FDEV                                    5e3      // Hz 
#define FSK_DATARATE                                2.4e3      // bps
#define FSK_BANDWIDTH                               20e3     // Hz >> DSB in sx126x
#define FSK_AFC_BANDWIDTH                           100e3     // Hz
#define FSK_PREAMBLE_LENGTH                         5         // Same for Tx and Rx
#define FSK_FIX_LENGTH_PAYLOAD_ON                   false

#else
    #error "Please define a modem in the compiler options."
#endif

typedef enum
{
    LOWPOWER,
    RX,
    RX_TIMEOUT,
    RX_ERROR,
    TX,
    TX_TIMEOUT,
}States_t;

//#define RX_TIMEOUT_VALUE                            1000
#define RX_TIMEOUT_VALUE                            64000
#define BUFFER_SIZE                                 64 // Define the payload size here

const uint8_t PingMsg[] = "PING";
const uint8_t PongMsg[] = "PONG";

uint16_t BufferSize = BUFFER_SIZE;
uint8_t TX_Buffer[BUFFER_SIZE];
uint8_t RX_Buffer[BUFFER_SIZE];


States_t State = LOWPOWER;

int8_t RssiValue = 0;
int8_t SnrValue = 0;
void OnTxDone( void );
void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr );
void OnTxTimeout( void );
void OnRxTimeout( void );
void OnRxError( void );
uint8_t  lora_chongfuyingda_flag;
uint8_t Lora_rx_open_flag;
void LedToggle(void)

{
//	HAL_GPIO_TogglePin(GPIOB, LED1_Pin);
}
void Lora_tx_mode( void )
{
            Radio.SetChannel( 470200000 );
            Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, 0,
            7, LORA_CODINGRATE,LORA_PREAMBLE_LENGTH_T, LORA_FIX_LENGTH_PAYLOAD_ON,
            false, 0, 0, LORA_IQ_INVERSION_ON_T, 3000 );

}
void Lora_rx_open( void )
{
    if(Lora_rx_open_flag==1)
    {
    Lora_Init();
    Lora_rx_open_flag=0;
    }
    if(lora_yingda_flag&&lora_chongfuyingda_flag==0)
    {
        printf("Lora:%d  %d\r\n",lora_yingda_flag,lora_chongfuyingda_flag);
    lora_chongfuyingda_flag=1;
    RadioEvents.TxDone = OnTxDone;
    RadioEvents.RxDone = OnRxDone;
    RadioEvents.TxTimeout = OnTxTimeout;
    RadioEvents.RxTimeout = OnRxTimeout;
    RadioEvents.RxError = OnRxError;

    Radio.Init( &RadioEvents );
    Radio.SetChannel( 500000000 );
    Radio.SetRxConfig( MODEM_LORA, 0, 7,
    LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH_R,
    LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON,
    0, false, 0, 0, true, 1 );

    SX126xClearIrqStatus( IRQ_RADIO_ALL );
//    Radio.SetRxDutyCycle(RxDutyCycle_RX_time,RxDutyCycle_SLEEP_time);
        Radio.Rx( RX_TIMEOUT_VALUE ); 

        
    }
}
void OnTxDone( void )
{
    LED_TB_OFF;
    if(lora_yingda_num>1000)
    {
    lora_yingda_num=0;
    lora_yingda_flag=1;
    }
//    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_SET);
    if(lora_yingda_flag==0)    
    Lora_rx_open_flag=1;
    else
    {}
            
}

extern uint32_t lp_time;
uint32_t lora_txtime_old;
extern uint8_t frame_seq_nb2,rec_nearbase_num,ancidlist_num;
uint16_t RX_TIMEOUTs;
extern LPTIM_HandleTypeDef hlptim1;
uint16_t current_time,start_time,end_time;
    uint16_t lora_recv_devid=0;
u32 id;
extern uint8_t Lora_tx_ancnum;
extern uint16_t Lora_tx_ancid[50];
extern uint16_t Lora_tx_ancdist[50];
uint8_t power_and_key=0;
extern u8 battary,button;
u8 lora_seq_nb2;
void Lora_tx_zubao( void )
{
    uint16_t checksum;
                    usart_send[2] = 0x12;//Õý³£Ä£Ê½ 
					usart_send[3] = 8+Lora_tx_ancnum*4;//Êý¾Ý¶Î³¤¶È
                    memcpy(&usart_send[4],&dev_id,2);
					usart_send[6] = lora_seq_nb2;//°üÐò
                    power_and_key=battary<<1;//°Ñ°´¼ü¸úµçÁ¿2ºÏ1£¬·¢³öÈ¥
                    power_and_key=power_and_key+button;
                    memcpy(usart_send+7,&power_and_key,1);
                    usart_send[8] = lora_yingda_flag;//loraµÈ´ýÓ¦´ðλ
                    usart_send[9] = Lora_tx_ancnum;//loraµÈ´ýÓ¦´ðλ
//                    usart_send[9] = lora_yingda_flag;
					memcpy(&usart_send[10],&Lora_tx_ancid,2*Lora_tx_ancnum);				
					memcpy(&usart_send[10+Lora_tx_ancnum*2],&Lora_tx_ancdist,2*Lora_tx_ancnum);
					checksum = Checksum_u16(&usart_send[2],8+4*Lora_tx_ancnum);
					memcpy(&usart_send[10+4*Lora_tx_ancnum],&checksum,2);
}
uint16_t current_count;
u16 Lora_recevcount;
extern uint8_t no_data_chongqi_num;
void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
{   
//    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_SET);
    Lora_recevcount=HAL_LPTIM_ReadCounter(&hlptim1);
    Lora_recevcount=Lora_recevcount+197;//197´ú±í6ms
    if(Lora_recevcount>=32768)
    {
    Lora_recevcount -=32768;
    }
    BufferSize = size;
    memcpy( RX_Buffer, payload, BufferSize );
    RssiValue = rssi;
    SnrValue = snr;
    no_data_chongqi_num=0;
    Radio.Standby();
    if(lora_yingda_flag)
    {
    memcpy(&lora_recv_devid,&RX_Buffer[4],2);
        if(lora_recv_devid==dev_id)
        {
        
        
        }
    }
    if(lora_yingda_flag==0)
    {
        lora_chongfuyingda_flag=0;
//        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_2, GPIO_PIN_SET);
//	    Delay_Ms(10);
//        HAL_GPIO_WritePin(GPIOB, GPIO_PIN_2, GPIO_PIN_RESET);
        uint16_t i=0;
//        for(i=0;i<BufferSize;i++)
        {printf("R %d:\r\n",RX_Buffer[3]);}
        RX_TIMEOUTs++;
//        printf("RX_num :%d\r\n",RX_TIMEOUTs);
//        start_time=HAL_LPTIM_ReadCounter(&hlptim1);
//        end_time=start_time+((32768/1000)*20);
//        if(end_time>=32768)
//	    {end_time-=32768;}
//        current_time=HAL_LPTIM_ReadCounter(&hlptim1);
        HAL_GPIO_WritePin(RADIO_NSS_GPIO_Port, RADIO_NSS_Pin, GPIO_PIN_SET); //ƬѡloraÎÞЧ

        	id =  dwt_readdevid() ;
	while (0xDECA0130!=id) 
    {
        u8 iderror_count = 0;
        id =  dwt_readdevid() ;
        if(iderror_count++>100)
        {
////////            printf("UWBоƬID´íÎó");
            break;
        }
    }
////////            printf("Anchor_App\r\n");
        current_count=HAL_LPTIM_ReadCounter(&hlptim1);
		while(current_count<Lora_recevcount||current_count>Lora_recevcount+16384)
		{
			current_count=HAL_LPTIM_ReadCounter(&hlptim1);
			if(current_count<Lora_recevcount-300)
			{
				break;
			}
		}
//    HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_RESET);
            Anchor_App();
                
            HAL_GPIO_WritePin(RADIO_NSS_GPIO_Port, RADIO_NSS_Pin, GPIO_PIN_RESET); //ƬѡloraÓÐЧ
//            delay_ms(1);
//            if(lp_time-lora_txtime_old>=1)
//            {
//            LED_TB_ON;    
//            lora_txtime_old=lp_time;
//            lora_seq_nb2++;
//            lora_yingda_num++;
//            Lora_tx_zubao();
//            Lora_tx_mode();            
//            Radio.Send( usart_send, 12+Lora_tx_ancnum*4);
//            Lora_tx_ancnum=0;    
//            }
//            else
//            {
            Radio.SetRxDutyCycle(RxDutyCycle_RX_time,RxDutyCycle_SLEEP_time);
//            }

//HAL_GPIO_WritePin(GPIOA, GPIO_PIN_15, GPIO_PIN_RESET);
    }
}

void OnTxTimeout( void )
{
       Radio.Standby();
        Lora_Init();
    Lora_rx_open_flag=0;
    
    Radio.SetRxDutyCycle(RxDutyCycle_RX_time,RxDutyCycle_SLEEP_time);
}

void OnRxTimeout( void )
{
    Radio.Standby();
        Lora_Init();
    Lora_rx_open_flag=0;
    
    Radio.SetRxDutyCycle(RxDutyCycle_RX_time,RxDutyCycle_SLEEP_time);
//    printf("slave OnRxTimeout\r\n");	
    
}

void OnRxError( void )
{

    Radio.Standby();
        Lora_Init();
    Lora_rx_open_flag=0;
    Radio.SetRxDutyCycle(RxDutyCycle_RX_time,RxDutyCycle_SLEEP_time);
}

void Lora_Init(void)
{
    RadioEvents.TxDone = OnTxDone;
    RadioEvents.RxDone = OnRxDone;
    RadioEvents.TxTimeout = OnTxTimeout;
    RadioEvents.RxTimeout = OnRxTimeout;
    RadioEvents.RxError = OnRxError;
//    printf("Lora_Init3\r\n");
        Radio.Init( &RadioEvents );
        Radio.SetChannel( RF_FREQUENCY );		

//        Radio.SetStandby( STDBY_RC );
    
//    Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
//                                   LORA_SPREADING_FACTOR, LORA_CODINGRATE,
//                                   LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
//                                   true, 0, 0, LORA_IQ_INVERSION_ON, 3000 );
																	 
//		Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
//                                   LORA_SPREADING_FACTOR, LORA_CODINGRATE,
//                                   LORA_PREAMBLE_LENGTH_T, LORA_FIX_LENGTH_PAYLOAD_ON,
//                                   false, 0, 0, LORA_IQ_INVERSION_ON_T, 1000 );
    
//    Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
//                                   LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
//                                   LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON,
//                                   0, true, 0, 0, LORA_IQ_INVERSION_ON, false );
//					printf("Lora_Init1\r\n");												 
		Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
                                   LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH_R,
                                   LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON,
                                   0, false, 0, 0, LORA_IQ_INVERSION_ON_R, 1 );
                                   
//		Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
//                                   LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
//                                   LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON,
//                                   0, false, 0, 0, LORA_IQ_INVERSION_ON, true );
    


    {
       SX126xClearIrqStatus( IRQ_RADIO_ALL );
//        SX126xSetDioIrqParams( IRQ_RX_DONE | IRQ_CRC_ERROR,
// IRQ_RX_DONE | IRQ_CRC_ERROR,
// IRQ_RADIO_NONE, IRQ_RADIO_NONE
// );
//            SX126xSetDioIrqParams( IRQ_RADIO_ALL, //IRQ_RX_DONE | IRQ_RX_TX_TIMEOUT,
//       IRQ_RADIO_ALL, //IRQ_RX_DONE | IRQ_RX_TX_TIMEOUT,
//       IRQ_RADIO_NONE,
//       IRQ_RADIO_NONE );
       Radio.SetRxDutyCycle(RxDutyCycle_RX_time,RxDutyCycle_SLEEP_time);
//        Radio.Rx( RX_TIMEOUT_VALUE ); 
//       printf("I am Slave!\r\n");        
    }
       
}